On this week's The Walking Dead…

A flashback reveals that the military was using napalm on the city.

In present time, the search for Sophia continues.

While Daryl is out looking, his horse is spooked and he falls down a ledge and stabs himself with an arrow. His injuries cause him to hallucinate and see his brother Merle. Daryl wakes to find himself attacked by zombies.

Rick and Shane discuss whether to stop looking for Sophia. Shane thinks they should end it, while Rick remains vigilant.

Hershel becomes more wary of the group and attempts to reel in his people.

Daryl manages to make it back to camp, but Andrea thinks he's a zombie and shoots him. Luckily it was just a graze.

Glenn wants to get lucky with Maggie again and plans to meet her in the barn. He discovers a pack of zombies trapped inside.